Remove last usage functions from HostContentSettingsMap and clean up prefs

chrome/browser/geolocation/geolocation_browsertest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stddef.h>
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
@@ skipping 726 matching lines @@
   ASSERT_NO_FATAL_FAILURE(Initialize(INITIALIZATION_DEFAULT));
   WatchPositionAndObservePermissionRequest(true);
 
   // TODO(mvanouwerkerk): Can't close a window you did not open. Maybe this was
   // valid when the test was written, but now it just prints "Scripts may close
   // only the windows that were opened by it."
   std::string script = "window.domAutomationController.send(window.close())";
   ASSERT_TRUE(content::ExecuteScript(
       current_browser()->tab_strip_model()->GetActiveWebContents(), script));
 }
-
-IN_PROC_BROWSER_TEST_F(GeolocationBrowserTest, LastUsageUpdated) {
-  ASSERT_NO_FATAL_FAILURE(Initialize(INITIALIZATION_DEFAULT));
-  base::SimpleTestClock* clock_ = new base::SimpleTestClock();
-  GetHostContentSettingsMap()->SetPrefClockForTesting(
-      std::unique_ptr<base::Clock>(clock_));
-  clock_->SetNow(base::Time::UnixEpoch() + base::TimeDelta::FromSeconds(10));
-
-  // Setting the permission should trigger the last usage.
-  GetHostContentSettingsMap()->SetContentSettingDefaultScope(
-      current_url(), current_url(), CONTENT_SETTINGS_TYPE_GEOLOCATION,
-      std::string(), CONTENT_SETTING_ALLOW);
-
-  // Permission has been used at the starting time.
-  EXPECT_EQ(GetHostContentSettingsMap()->GetLastUsage(
-      current_url().GetOrigin(),
-      current_url().GetOrigin(),
-      CONTENT_SETTINGS_TYPE_GEOLOCATION).ToDoubleT(), 10);
-
-  clock_->Advance(base::TimeDelta::FromSeconds(3));
-
-  // Calling watchPosition should trigger the last usage update.
-  WatchPositionAndObservePermissionRequest(false);
-  ExpectPosition(fake_latitude(), fake_longitude());
-
-  // Last usage has been updated.
-  EXPECT_EQ(GetHostContentSettingsMap()->GetLastUsage(
-      current_url().GetOrigin(),
-      current_url().GetOrigin(),
-      CONTENT_SETTINGS_TYPE_GEOLOCATION).ToDoubleT(), 13);
-}